Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Which of the following statements incorrect? The elements of group 18 are known as aerogens Metallic character increases on going down a group All the elements belonging to a particular period have same valence shell configuration. Group 2 elements are all metals 2 / 30 Glass electrodes can not be used to measure the ph of the pure all these gelatin Acetic acid Ethyl alcohol 3 / 30 . Low-quality steels with an M suffix on the designation intended for non-structural application is classified as commercial quality Merchant quality special quality low quality drawing quality 4 / 30 The concept is also known as proton-donor acceptor system Lewis Bronsted-Lowery Lux-Flood Usanvich 5 / 30 For the respiration of sea divers mixtyre is He and O2 Kr and O2 Ar and O2 Ne and O2 6 / 30 Which of the following functional groups is not involved in ton-exchange chromatography? Weak acids Carbohydrates strong acid week base strong base 7 / 30 Is a peroxy acid H2S2O6 H2S2O7 H2SO5 H2SO4 8 / 30 XeF4 is obtained when a mixture of Xenon and fluorine in the ratio la heated in a nickle vessel at 400°C 0.045138888888889 0.055555555555556 0.20902777777778 0.04375 9 / 30 In reverse-phase chromatography, which of the analyte will be retained more on the stationary phase? polar none Semi-polar non-polar 10 / 30 When CH3COOH is titrated against NaOH, the pH as the equivalence point is <7 6.8 7 >7 10 11 / 30 magnesium burns in air to give MgO MgCO3 Mg3N2 both a and c 12 / 30 Putrefaction is All of these Reduction of protiens Bacterial oxidation of protiens Hydrolysis of protiens 13 / 30 Lux.Flood concept inn Bono-acceptor system of proton oxide ions neutron electron pair 14 / 30 The pH of milk is 7 7.5 6.5 6 15 / 30 The value of Kw increases with temperature because the ionization of water is endothermic Negative catalyst Exothermic positive 16 / 30 Which pair of species can undergo chemical reaction with each other ? CO2 and HCl CaH2 and SiH4 LiH and H2O CO + NO 17 / 30 The separation efficiency of It column Can be expressed in terms of number of Mobile phases Theoretical plates Stationary phases Solvents used 18 / 30 Which of the following biogeochestical cycles is not component of ecosystem? water cycle oxygen cycle nitrogen cycle potassium cycle carbon cycle 19 / 30 which of the following is not an alkali metals? Ca Rb Fr Sb 20 / 30 Of the following the commonly used in the laboratory desiccator is Anhyd. Na2CO3 none Anhyd. CaCl2 Dry NaCl 21 / 30 pick out incorrect statement for XeF4? it is used as flourinating agent it has octahedral structure XeF4 disproportionates violently with water It oxidizes I- to I2 22 / 30 Natural fertilizers are materials derived from animals algae Virus all of these plants 23 / 30 The oxidation number of Xe in XeOF2 is 3 1 2 24 / 30 Which of the following exists as polymeric chains insolid state? BaCl2 MgCl2 BeCl2 SrCl2 25 / 30 Which of the poly saccacharide on hydrolysis gives only fructose Cellulose Amylopectin Amylose Insulin 26 / 30 Which of the following hydroxides is stable? Ba(OH)2 Ca(OH)2 Mg(OH)2 Sr(OH)2 27 / 30 which one of the following statementy is false about transition metals? They form complexes they form coloured ions They show variable valency All transition metal compound are paramagnetic 28 / 30 Which of the followings is not a component of HPLC system? particle collector pumps columns detector and readoni injection system 29 / 30 What is prefix in steel identification means it is made in an electric furnace? X B Z E H 30 / 30 Which of the following energy is trapped by the autotrophie orgrinistna? Mechanical energy Radiant energy Electrical energy Vibrational enure DO Electronic energy Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022
